LAX90DVA09

NTSB accident investigation · Rockwell S2R · Mendota, CA · August 18, 1990

Accident · No injuriesFinal report
Date
August 18, 1990, 04:00 local (11:00 UTC)
Place
Mendota, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N3657XRockwell S2R
Weather
Visual (VMC) · Night/dark
Status
Completed · report March 5, 1993
Report
Approved by Office Director
FAA report
19900818034339A
Case key
26563

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

Loss of engine power for an unknown reason. Darkness was a related factor.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerManeuvering - aerial application
Reason for occurrence undeterminedCause
Forced landingLanding
In flight collision with terrain/waterLanding
Light condition - dark nightFactor
Terrain condition - crop
Terrain condition - ditch

Analysis

The pilot reported that there was a loss of power during a spray run. He dumped his chemical load. Subsequently, the aircraft collided with crops and a ditch, then it nosed over. No pre-accident part failure or malfunction of the engine was found. The collision occurred during darkness at 0400 PDT.

Aircraft

Registration
N3657X
Reported as
Rockwell S2R
Category
Airplane
Serial number
1888R
Airframe hours
8,329
Engine
P&W R-1340, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Western Ag. Aviation, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · March 7, 1990 · 343 hours before

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
28
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
2,600 total · 1,000 in this make and model · 200 in the last 90 days · 100 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Visibility
15 statute miles
Lowest ceiling
None
Temperature
68 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.